Automatic lock for record book metal



July 4, 1933. P. o. UNGER AUTOMATIC LOOK FOR RECORD BOOK METAL Filed Dec. 10, 1930 2 Sheets-Sheet l /L AYE! /.z PauZ 0. Zlrz ger? July 4, 1933.

IIIIIII/IIl/II/I/II III/I/III/II/IIIII/I/II/I/II/ P. O. UNGER AUTOMATIC LOCK FOR RECORD BOOK METAL Filed Dec. 10, .1930

fig/T5 2 Sheets-Sheet 2 MIIIIIIIII/II/I/III/I/fi Patented July 4, 1933 'uurreusrarrs PATENT orris PAUL, O. UNGER, OF CHECAGO, IL LINOIS ASSIGNOR T0 WILSON-JONES COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF MASSACHUSETTS AUTOMATIC LOOK FOR RECORD BOOK Application filed-December 10,1930. Serial No. 501,185.

This invention relates to a loose-leaf binder and concerns itself with mechan sm for looking the same in: its closed posltion against unauthorized opening thereof so that leaves cannot be removed. v

The invention comprises the'novel structure and combination of parts hereinafter described and more particularly pointed out and defined in the appended claims.

Other and furtherimportant objects of this invention will be apparent from the disclosures in the specification and the accompanying drawings.

In the accompanying drawings, which il lustrate a preferred. form of this invention, and in which similar reference numerals refer to similar features in the different views;

Figurel is an enlarged fragmentary end elevational view of a loose-leaf binder embodying this invention;

Figure 2 is a fragmentary interior plan view of one side of the binder illustrating the slide plate in locked position;

' Figure Sis a view similar to Figure 2' il-. lustrating the slide plate in its unlocked position; v i

Figure d'is'an enlarged fragmentary interior plan view of thebinder illustrating the lockingmechanism in its operative p0- si'tion; p I

Figure 5 is a View similar to. Figure 4 illustrating the locking mechanism in its inoperative position;

Figure 6is an enlarged sectional view taken uponthe line VI-VI of Figure 4;;

Figure 7 is an enlarged'sectional view taken upon the line'VII VII of Figure 5; and

Figure 8 is an enlarged sectional view taken upon the line VIIIVIH of Figure 2. In the drawings there is shown a pair of cover members land 2, which are hinged to a back member 3. A casing t is shown attached to the hinge plate of the cover member 1. This casing is shown as consisting of a sheet-metal member folded upon itself to provide a longitudinally extending box-like structure with a barrel 5 extending along its inner edge. The barrel 5 is slotted or notched as indicated at 6 for a purpose that will presently appear. The cover memher 2 is provided with a plate 7 upon its inner surface which pivotally supports a plurality of leaf-holding posts 8 which are provided at their upper or free ends with suitable apertures. These apertured ends of the posts 8 are adapted for entering the notches can the casing 4 and are adapted to be pivo-tally locked thereto by a slidebar 9having. pintles 10 thereonwhich engage insuch apertures in a manner that is well-known in the art.

This invention relates more particularly to means for securing or looking the slide bar 9 in its operative position so that an unauthorized person cannot open the binder and remove record sheets therefrom, or add record sheets thereto. To this end the slide bar 9 1SFPI'OV1Cl6Cl with a notch or recess 11 shown more clearly in Figures l and 5, for receiving a lock bolt 12 supported in the easing 4. A spring 13 positioned between the rear end of the lock bolt 12 and'the casing 4c normally urges the lock bolt toward the slide plate 9. In view of the fact that the lock bolt, 12 is concealed within the casing, it is impossible'for an unauthorized person to actuate the same except through'a hey-coir trolled means which will now be described. In referring to F igures 2 and 3, it will be noted that the casing i is slightly enlarged atone end as indicated at M, and within this enlarged portion there is located at key-actuated tumbler look which is generally indicated byjthe referencenumeral 14. The barrel or cylinder 15 of this look extends into an ure 6. and within the aperture, the cylinder 15 is provided with a radially extending luglG which is adapted to rotate into a slot or opening 17 in the upper wall of the recess 12d aperture 12a in the bolt 12- as'shown in F igof the bolt. The cylinder 15 is provided with s with the result that as soon as the bolt 12 is withdrawn from its notch 11, the spring 21 will immediately project the pintle slide forwardly so that when the key is released, and the spring 13 comes into action, the bolt 12 will be pressed forwardly against the edge of the pintle slide at a point rearwardly of the notch 11 as shown in Figure 5. Consequently, all that is necessary for opening the binder is to rotate the key, when the pintle bar is automatically retracted and two hands of the operator are not required as heretofore. When the pintle slide is pushed inwardly, the slide locking bolt will automatically snap into the recess 11 without the necessity of actuating the key.

I am aware that many changes may be made and numerous details of construction may be varied through a wide range without 7 o departing from the principles of this invention, and I, therefore, do not purpose limiting the patent granted hereon otherwise than is necessitated by the prior art. p

I claim as my invention:

1. In a loose-leaf binder, a member having a plurality of pivotally supported impaling posts, a cover member having a sheet-metal casing with spaced notches for receiving said impaling posts, a pintle slide in said casing for engaging the free ends of saidposts, a spring-impelled locking bolt for'normally locking said pintle slide in its operative position, a key-controlled means for releasing said locking bolt and yielding means for automatically projecting said pintle slide to its inoperative position when the same isunlocked.

2. In a loose-leaf binder, a member having a plurality of pivotally supported impaling posts with free apertured ends,] a cover having a casing with notches for receiving the apertured ends of said posts, a pintle slide in said casing for engaging the apertures in said post, a spring-impelled locking bolt for automatically locking said pintle slide in operative position and yielding means for projecting said pintle slide.

3. In a record binder, a cover member, impaling posts upon said cover member, a second cover member having a notchedcasing for receiving said impaling posts, a pintle slide in said casing for engaging said posts, said slide having a notch, a spring-pressed bolt for engaging said notch, said bolt having a recess with an opening in the top wall thereof, a key-controlled cylinder in the end of said casing extending into said recess and having a radial lug adapted to enter said opening for retracting said bolt.

4. In a record binder having a pintle slide with a notch, a spring-pressed locking member normally projected toward said slide, and engageable in said notch, a key-controlled rotatable cylinder having means engageable with said locking member for retracting the same, yielding means for automatically shifting said slide to inoperative position when said member is retracted, said locking member being automatically shifted into engagement with said notch when said slide is shifted to operative position.

5. In a record bin der having a pintle slide, a locking member therefor, key-controlled means for actuating said member in one direction whereby said slide may be shifted to its inoperative position, and yielding means for automatically actuating said member in the other direction against the edge of said slide in its inoperative position, said slide having a locking notch and said yielding means automatically projecting said locking member into engagement with said notch when said slide is shifted to its operative position.

6. In a record binder having a pintle slide, a member shiftable into locking engagement with said slide in its operative positioh, keycontrolled means for actuating said member for unlocking said slide, means for automatically retracting said slide when the same is unlocked, and means for automatically actuating said member for locking said slide when the latter is shifted to its operative position.

7. In a record binder, a pintle slide having a notch in its outer edge, a latch bolt having a recess, yielding means for pressing said latch bolt against the outer edge of said slide when said slide is in its inoperative position, said bolt automatically engaging said notch when said slide is shifted to its operative position, a key-controlled member extending into said recess for retracting said bolt and means for automatically retracting said slide when said bolt is retracted.

In testimony whereof I have hereunto subscribed my name at Chicago, Cook County,

Illinois. 7

PAUL O. UNGER. 

